Java 3D array assign values

3d, arrays, java

Solution

static String[][][] School= new String[1000][20][5];

Consider figure which has 3 Dimension.

So when you insert `School[0][0][0]="A1"` it means you have entered element at 0,0,0 position.

From 0,0,0 this will move upto the position 1000,20,5.

You can insert like this But you have so many elements.

School[0][0][0]="A1"
School[0][0][1]="A2"
School[0][0][2]="A3"
.....
School[0][1][0]="B1"
School[0][1][1]="B2"
School[0][1][2]="B3"
......

In 3D array elements look like

int[3][4][2] array3D
// means Three (4x2) 2 Dimensional Arrays 

 int[4][2]
 //means Four 1 dimensional arrays.

Now how to add elements in 3D array?

At Start you can directly use

int[][][] threeDArray = 
    {  { {1,   2,  3}, { 4,  5,  6}, { 7,  8,  9} },
       { {10, 11, 12}, {13, 14, 15}, {16, 17, 18} },
       { {19, 20, 21}, {22, 23, 24}, {25, 26, 27} } };

This is very tedious task in your case as you want to insert details at every position. As you have `1000` records.

Your array will have elements like this

NOTE:It's not recommended to use 3D array for this purpose.

Suggestion:Declare a class with three `Strings` create constructor with this three parameters and put getter and setters to get and set values via `Objects`

Problem

I have an array that looks like this ``` static String[][][] School= new String[1000][20][5]; ``` - In the first bracket I save the class name - In the second I save an ID of a student - In the third I save information about the student (his name, family name etc). First I assign all the class names, after that I assign to every class its student ID and then I can fill in their information. How can I do it? I tried it with for example ``` School[i] = "A1"; ``` but it's not working. EDIT: Or is there an other way to save this all 3 things? (class name, its students and its iformation)

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